/*公用样式*/
*{margin: 0;padding: 0;box-sizing: border-box;}
ul,ol{list-style: none;}
input,button{outline: none;}
.fl{float: left;}
.fr{float: right;}
.clearfix:after {
	content: '';
	display: block;
	height: 0;
	line-height: 0;
	visibility:hidden;
	clear: both;
}
.clearfix {
	*zoom: 1;
}
html,body{width: 100%;height: 100%;}